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Area of ​​a triangle using Heron's formula

calculator calculates the area of ​​a triangle after a length of three sides.                


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Conversion between number bases

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Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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Calculate how long you go on foot

Calculator calculates the approximate time given distance and overcome the distance on foot.
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Calculator index of renal failure (Renal Failure Index)

Calculator to the data: the amount of sodium in the urine, serum creatinine and urine of renal failure calculates the RFI.                
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Caesar cipher

Calculator specified key encrypts the text using the Caesar cipher. Are accepted only letters, other characters are ignored.        
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Insulation of wall

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Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.